CVE-2026-89465

Freed-memory access via delayed-work teardown race

Published Sep 11, 2026 · Updated Sep 11, 2026

Use-after-free in the Linux rt9455 power-supply driver allows a delayed callback to access freed memory during device teardown. The teardown path cancels max_charging_time_work before batt_presence_work, which can queue the canceled callback after rt9455_info is freed. Reachability requires the RT9455 driver and a device-removal or failed-probe race; the published record establishes neither an attacker-controlled trigger nor a specific end effect.

CVSS severityUnavailable
Unscored
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use-after-free in the Linux rt9455 power-supply driver allows a delayed callback to access freed memory during device teardown. The teardown path cancels max_charging_time_work before batt_presence_work, which can queue the canceled callback after rt9455_info is freed. Reachability requires the RT9455 driver and a device-removal or failed-probe race; the published record establishes neither an attacker-controlled trigger nor a specific end effect.

The record

CVE
CVE-2026-89465
Published
Sep 11, 2026
Updated
Sep 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Sep 11, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.2
  2. Affected versionversion=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <1b9978433c61a9b46e48832a1ebceee1cf5c9eb4
  3. Affected versionversion=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <3e7a1ebc32fad5a558254a478efd401c17a24381
  4. Affected versionversion=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <7323e562f6961e4b7bce3225cde4ecbc78260deb
  5. Affected versionversion=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <df67c7a2fff8414aa766b8cd5ffe11ec1ca27d02

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=4.2; version=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <1b9978433c61a9b46e48832a1ebceee1cf5c9eb4; version=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <3e7a1ebc32fad5a558254a478efd401c17a24381; version=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <7323e562f6961e4b7bce3225cde4ecbc78260deb; version=e86d69dd786e94046b8f5be7df1b9a8226a40b2a <df67c7a2fff8414aa766b8cd5ffe11ec1ca27d02

Published CVSS scores

No CVSS assessment is available in this record.

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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